English verb conjugation
COULD RENDER

Regular verb: render - rendered - rendered

Affirmation

Simple form	V-ing form
I could render you could render he could render we could render you could render they could render	I could be rendering you could be rendering he could be rendering we could be rendering you could be rendering they could be rendering
Perfect	V-ing perfect
I could have rendered you could have rendered he could have rendered we could have rendered you could have rendered they could have rendered	I could have been rendering you could have been rendering he could have been rendering we could have been rendering you could have been rendering they could have been rendering

Negation

Simple form	V-ing form
I could not render you could not render he could not render we could not render you could not render they could not render	I could not be rendering you could not be rendering he could not be rendering we could not be rendering you could not be rendering they could not be rendering
Perfect	V-ing perfect
I could not have rendered you could not have rendered he could not have rendered we could not have rendered you could not have rendered they could not have rendered	I could not have been rendering you could not have been rendering he could not have been rendering we could not have been rendering you could not have been rendering they could not have been rendering

Interrogative form

Simple form	V-ing form
could I render? could you render? could he render? could we render? could you render? could they render?	could I be rendering? could you be rendering? could he be rendering? could we be rendering? could you be rendering? could they be rendering?
Perfect	V-ing perfect
could I have rendered? could you have rendered? could he have rendered? could we have rendered? could you have rendered? could they have rendered?	could I have been rendering? could you have been rendering? could he have been rendering? could we have been rendering? could you have been rendering? could they have been rendering?

Interro-negative form

Simple form	V-ing form
could I not render? could you not render? could he not render? could we not render? could you not render? could they not render?	could I not be rendering? could you not be rendering? could he not be rendering? could we not be rendering? could you not be rendering? could they not be rendering?
Perfect	V-ing perfect
could I not have rendered? could you not have rendered? could he not have rendered? could we not have rendered? could you not have rendered? could they not have rendered?	could I not have been rendering? could you not have been rendering? could he not have been rendering? could we not have been rendering? could you not have been rendering? could they not have been rendering?